KR20090123406A - Detecting apparatus and the method of rail damage - Google Patents

Abstract

PURPOSE: A detecting apparatus and the method of rail damage are provided to reduce the ground facility by practical use of the train control system of the radio system through the rail break detection function. CONSTITUTION: The first and second current detection methods(140,142) measures the current value applied to the flyback line(130). The rail break detection means(150) compare the different current value measured by the first and the second current detection method with the flyback line current allowance reference value. The rail break detection means judges the rail break. The first current detection method is composed of the current sensor. The second current detection method is composed of the current sensor measuring the current value of the flyback line.

Description

Detecting apparatus of rail and its method {Detecting apparatus and the method of rail damage}

1 is a configuration diagram of a general catenary and track circuit,

2 is a diagram illustrating the flow of the catenary current during the operation of a general train;

3 is a view showing the flow of the catenary current in the state that the rail is normal,

4 is a view showing the flow of the catenary current in the state that the rail is broken;

5 is a configuration diagram of a tear detection device of a rail according to the present invention;

6 is a detailed configuration diagram of a tear detection device of a rail according to the present invention;

7 is a control flowchart for detecting whether a rail is broken according to the present invention.

*** Explanation of symbols for main parts of drawing ***

100: train 102: tram line

110: first rail 112: second rail

120: processing line 130: return

140: first current sensing means 142: second current sensing means

150 rail breakage detecting means 152: comparison processing unit

154: alarm unit 200: equipment room

The present invention relates to a rail breakage detecting apparatus and a method thereof, and more particularly, to a rail breakage detecting apparatus and method for determining rail breakage by measuring and comparing current values flowing through both rails at an input terminal of a return line. It is about.

In general, train tracks are equipped with a catenary system for supplying the starting power required for the train to operate and a signal system for operating the train safely and efficiently.

At this time, the signal equipment is a track circuit, which uses a rail in which the electric current of the tramline flows as a part of the electric circuit, and detects the presence of the train by shorting or opening the electric circuit by the axle of the train and operating the train. It will be able to transmit the necessary information from the ground to the vehicle.

At this time, the track circuit is divided into various ways such as AC, DC, impulse, audio frequency and code according to the power source used.

On the other hand, the track circuit is the main function of the detection and control of the train, it is also very important to detect the loss of the rail in advance to promote the safe operation of the train.

Referring to FIG. 1, the track circuit is configured to be about 1 km, and a special facility called an impedance bond 10 is installed in the middle of the first and second rails 20 and 22 and flows through the tram line 30. The flow of the catenary current divides the signal section at regular intervals without interrupting it.

On the other hand, a return line 50 is provided for returning the tramline current passing through the first and second rails 20 and 22 to the processing branch line 40 at regular intervals (orbital circuit interval).

Accordingly, as shown in FIG. 2, when the train 1 occupies a part of the track circuit due to the configuration of the track circuit, the tramline current is the tram line 30, the first and second rails 20 and 22. , The retrace 50, the processing branch line 40 flows sequentially.

In this case, in a steady state in which the first and second rails 20 and 22 are not shorted, as shown in FIG. 3, the catenary current flowing through each of the first and second rails 20 and 22 has the same value. To have.

On the other hand, for example, when the first rail 20, which is one of the rails, is shorted, the catenary current value may flow to the second rail 22, which is the other rail, as shown in FIG.

In this case, the balance of the chariot line current of the impedance bond 10 due to the unbalance of the chariot line current affects the signal current of the trajectory circuit, thereby causing the trajectory relay (not shown) to fall.

Therefore, entering the train is not allowed by detecting the loss of the first or second rails 20 and 22 in the track circuit.

On the other hand, the general control method of the current train is the ground-based train control method that transmits the target speed from the signal machine room on the ground to the vehicle, the track information such as the gradient from the ground to the vehicle, the curve and the preceding train. When the train control information such as the passing time is transmitted to the vehicle, there is a vehicle-centered train control method that makes and operates the speed pattern on the vehicle.

Among them, in order to increase the efficiency of train operation, the on-vehicle train control method is becoming popular.

Such a train control method based on the on-vehicle takes a method of receiving ground information such as a gradient and a curve from a track circuit or a ground person, but ultimately removes equipment installed on the ground and sends and receives train control information wirelessly. Development is in progress.

Of course, track circuits that use a lot of ground equipment such as impedance bonds or signal cables have many disadvantages in terms of installation and maintenance costs, and when replaced by a wireless method, train detection and train control functions can be satisfied.

However, since the rail breakage detection function, which is one of the main safety functions performed by the conventional track circuit, may be damaged, the track circuit is currently being constructed in parallel even if a lot of cost is to be paid.

Therefore, the present invention is to solve these problems, the present invention is to detect the loss of the rail in advance to ensure the safe operation of the train in order to ensure the feedback of the tram line current at regular intervals for the connection with the processing ground line It is an object of the present invention to provide a rail breakage detecting device and a method for detecting rail breakage by measuring and comparing the amount of current flowing in both rails at a return input terminal provided.

In addition, the present invention can reduce the installation cost of the track circuit, accelerate the practical use of the train control system using a wireless to reduce the ground equipment, and the rail breakage detection device and method which is easier to maintain the signal equipment, The purpose is to provide.

The present invention for achieving the above object relates to a tear detection device of the rail; First and second current sensing means for measuring respective current values flowing in the return line for returning the tram line current to the overhead line in the middle of the first and second rails where the train moves; Rail breakage detecting means for determining a rail breakage when the return current unbalance current allowance reference value is exceeded by using the difference between the current values measured by the first and second current detection means; It is characterized in that the configuration.

At this time, the first current sensing means is made of a current sensor which is installed on the retrace to measure the tramline current value returned from the first rail to the retrace; The second current sensing means is characterized by consisting of a current sensor for measuring the electric current value of the tram line returning to the retrace.

In addition, the rail break detection means; Computing the difference between the current values input through the first and second current sensing means, and comparing the current difference value with the return current unbalance current allowable reference value, the rail breakage when the current difference value exceeds the return current unbalance current allowance reference value. And a warning processing unit for transmitting the alarm information to the equipment room on the ground when the comparing processing unit determines that the rail is broken.

At this time, the alarm unit is determined by the rail is broken and comprises a wireless transmitter for wirelessly transmitting the alarm information to the equipment room, the equipment room is further provided with a wireless receiver for receiving the wireless information transmitted through the wireless transmitter It features.

The present invention also relates to a method of detecting a break of a rail;

A first step of measuring a current value flowing in a return line through the first and second rails; Calculating a difference between the measured two current values; A third step of comparing the calculated current difference value with the return current unbalance current allowance reference value and comparing whether the input current difference value exceeds the return current unbalance current allowance reference value; And a fourth step of determining that the rail is broken when the current difference value exceeds the catenary current unbalanced current allowance reference value.

At this time, after the fourth step, a fifth step of transmitting the alarm information indicating the rail loss to the equipment room; characterized in that it further comprises.

And after the fifth step, a sixth step of comparing which input current value among the current values flowing to the return line is low; A seventh step of transmitting, after the sixth step, a first rail loss message notifying that the first rail is broken, when the current value flowing from the first rail to the return line is low; And an eighth step of transmitting, to the device room, a second rail loss message indicating that the second rail is broken when the current value flowing from the second rail to the return line is low after the sixth step. It is done.

Hereinafter, the characteristics of the rail detection device according to the present invention and its method will be understood by the embodiments described in detail with reference to the accompanying drawings.

At this time, Figure 5 is a configuration of the rail detecting device of the rail according to the present invention, Figure 6 is a detailed configuration of the rail detecting device of the rail according to the present invention, Figure 7 is a detection of the rail of the rail according to the present invention. This is a control flowchart.

5 and 6, in the middle of the first and second rails 110 and 112 through which the train 100 moves, retrace the tramline current flowing through the tramline 102 to the processing branch 120 to return the tramline current. 130 are installed at regular intervals.

The installation of such a retrace 130 serves to divide the signal section at regular intervals.

At this time, the tear detection device of the rail according to the present invention and the first and second current detection means (140, 142) for measuring the respective current value flowing from the first and second rails (110, 112) to the retrace 130 Rail loss, which is determined as a rail breakage when the return current unbalance current allowance reference value is exceeded by using the difference between the current values measured by the first and second current sensing means 140 and 142, compared to the return current allowance current allowance reference value. It consists of the detection means 150.

Hereinafter, the configuration of the tear detection device of the rail according to the present invention will be described in more detail.

First, the first current detecting means 140 is installed on the retrace 130 to measure a current value of the tramline that is returned from the first rail 110 to the retrace 130. Use

In addition, the second current sensing means 142 uses the same current sensor as the first current sensing means 140 to measure the tramline current value returned from the second rail 112 to the retrace 130. do.

Next, the rail break detection means 150 receives current values flowing through the first and second rails 110 and 112 through the retrace 130 through the first and second current detection means 140 and 142, respectively. A comparison processing unit 152 that calculates a difference between the current values and compares the current difference value with the return current unbalanced current allowable reference value and determines that the rail is broken when the current difference value exceeds the return current unbalanced current allowable reference value. When the processor 152 determines that the rail is broken, the alarm unit 154 is configured to transmit an alarm to the equipment room 200 on the ground.

At this time, when the current difference value is within the error range of the return current unbalance current allowable reference value, the comparison processing unit 152 determines that the rail is not in a normal state without breaking. In this case, the alarm command unit 154 Do not transmit alarm information through).

On the other hand, the alarm command unit 154 is configured as a radio transmitter 154a for wirelessly transmitting alarm information to the remote device room 200, which is determined to be a broken rail.

Of course, the device room 200 is also provided with a wireless receiver (200a) for receiving the alarm information wirelessly transmitted through the wireless transmitter (154a).

Thus, for example, when a train enters a specific track circuit section in which the first rail 110, which is a part of the rail, is broken, no current flows on the first rail 110, and the second rail 112 is the other rail. A large current flows through it, and the current difference is calculated from the current difference. The current difference value is compared with the return current unbalanced current limit value, and the alarm information is transmitted when the current difference value exceeds the return current unbalanced current limit value. To prevent entry and access of subsequent trains.

On the other hand, the comparison processing unit 152 is the first and second current sensing means 140,142 when the current difference value respectively inputted through the first and second current sensing means 140,142 exceeds the return current unbalanced current tolerance reference value. ) By comparing the current value input from which side is relatively small, it is determined that the rail is broken in the rail of the smaller current value, and transmits the broken rail information according to the alarm command unit 154 accordingly. .

Hereinafter, a broken detection process of the rail according to the present invention will be described in detail with reference to FIGS. 5 to 7.

When the train 100 passes through the upper portions of the first rail 110 and the second rail 112, the current value flowing through the first rail 110 and the second rail 112 to the return 130 is returned ( Current values measured by the first and second current sensing means 140 and 142 installed at 130 are input to the comparison processing unit 152 of the rail breakage detecting means 150 (S100).

When current values are input through the step S100, the comparison processing unit 152 of the rail breakage detecting means 150 calculates a difference between the two current values.

When the current difference value is extracted through the step S102, the input current difference value is compared with the return current unbalance current allowance reference value stored in the comparison processing unit 152 to compare whether or not the input current difference value exceeds the allowable current unbalance current allowance reference value. (S104)

At this time, the comparison processing unit 152 of the rail breakage detecting means 150, the step (S104), the difference between the current value input through the first and second current sensing means (140, 142) is less than the vehicle line unbalanced current tolerance reference value If the first and second current sensing means installed in the return line 130 to the step (S100) and continue to the current value flowing to the return line 130 through the first rail 110 and the second rail 112 ( 140, 142) input and monitor.

On the other hand, if the input current difference value exceeds the return current unbalance current allowable reference value through the step (S104), it is determined that the rail is broken to induce the train approach prohibition through the alarm command unit 154 of the rail loss detection means 150 Send alarm information wirelessly. Accordingly, the alarm information is received by the radio receiver 200a of the device room 200 to prohibit subsequent trains from entering (S106).

Then, after wirelessly transmitting the alarm information for inducing the train access through the step (S106), any of the current sensing means of the respective current values input through the first and second current sensing means (140,142) The comparison processing unit 152 of the rail breaking detection means 150 compares whether the input current value is low (S108).

When the current value of the first rail 110 is low through the step (S108) through the alarm command unit 154 of the rail damage detecting means 150, the first rail cut to inform that the first rail 110 is broken. The message is transmitted to the wireless receiver 200a of the device room 200. (S110)

On the other hand, when the current value of the second rail 112 is low through the step (S108) through the alarm command unit 154 of the rail breakage detection means 150 to inform the second rail 112 is broken. The rail loss message is transmitted to the radio receiver 200a of the device room 200. (S112)

Although the preferred embodiment of the present invention has been described above, the scope of the present invention is not limited thereto, and the scope of the present invention extends to the scope of the present invention to be substantially equivalent to the embodiment of the present invention. Various modifications can be made by those skilled in the art without departing from the scope of the present invention.

As described above, according to the present invention, it is possible to reduce the cost for implementing a function for detecting the loss of the rail by not using a track circuit made of an impedance bond or the like as in the prior art, and to detect the loss of the rail in advance to train There is an advantage that can ensure the safe operation of.

In addition, through the rail breakage detection function according to the present invention can accelerate the practical use of the radio type train control system to reduce the ground equipment, there is an advantage to further facilitate the maintenance of the signal equipment.

Claims (8)

First and second current sensing means for measuring respective current values flowing in the return line for returning the tram line current to the overhead line in the middle of the first and second rails where the train moves; Rail breakage detecting means for determining a rail breakage when the return current unbalance current allowance reference value is exceeded by using the difference between the current values measured by the first and second current detection means; It is comprised, The tear detection device of the rail characterized by the above-mentioned. The method of claim 1, The first current detecting means comprises a current sensor which is installed on the retrace line and measures a tramline current value returned from the first rail to the retrace line; And said second current detecting means comprises a current sensor for measuring a tram line current value returned to said return line. The method of claim 1, wherein the rail break detection means; Computing the difference between the current values respectively input through the first and second current sensing means and comparing the current difference value with the return current unbalanced current allowable reference value and breaking the rail when the current difference value exceeds the return current unbalanced current allowable reference value. A comparison processing unit judged as And the alarm incidence unit which transmits the alarm information to the equipment room on the ground when the comparison processor determines that the rail is broken. The method of claim 3, wherein And the alarm incidence unit is configured as a radio transmitter for wirelessly transmitting alarm information to the equipment room by determining that the rail is broken. The method of claim 4, wherein The apparatus room further comprises a radio detector for receiving a radio receiver for receiving alarm information wirelessly transmitted through the radio transmitter. A first step of measuring a current value flowing in a return line through the first and second rails; Calculating a difference between the measured two current values; A third step of comparing the calculated current difference value with the return current unbalance current allowance reference value and comparing whether the input current difference value exceeds the return current unbalance current allowance reference value; And a fourth step of determining that the rail is broken when the current difference value exceeds the catenary current unbalanced current allowable reference value. The method of claim 6, And a fifth step of sending out alarm information indicating a rail break to the equipment room after the fourth step. The method of claim 7, wherein A sixth step of comparing, after the fifth step, which input current value is low among the current values flowing in the retrace line; A seventh step of transmitting, after the sixth step, a first rail loss message notifying that the first rail is broken, when the current value flowing from the first rail to the return line is low; And And after the sixth step, an eighth step of transmitting, to the device room, a second rail loss message indicating that the second rail is broken when the current value flowing from the second rail to the return line is low. Break detection method of rail to do.

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